try this
https://fxdreema.com/shared/OCZjKxQF
Change the value in block 27 from 5 to the number of seconds you want
This is the first time I am trying this, so I don't know if it will work or not but I think this is the way.
If this does not work then try adding a condition block right above the block 28 to pass only when the s1 <1 and change the code input in block 26 from 0 to s1+1
C